Tumbler-lock.



PATBNTED APR, 24, 19de.

Nicfiionns W.

siveeiflcation of Letters Patent.

WEBB. oF NEW YORK, N. r.`

TUMBLER-LOCK.

Patented April 24, 1906,.

Application filed November l, 1904. Serial No. 230,065.

To 1r/ZZ whom z't may concern:

Be it kiiown that I, NICHOLAS W. WEBB, a citizen ofthe United States, and a resident of the city of New York, borough' of the'BronK, in the county and State of N ew York, have invented a new and Improved Tumbler- Lock,l of which the following is a full, clear, and exact description.

The invention relates to locks and latches; and its object is to provide a new and improved tumbler-lock more especiall designed for use as a latch or dead-lock and arranged to insure proper' working of the tumbler-pins, without danger of the same getting out of order, by providing strong and long tumblerpins and springs, without unduly increasing the size of the plug and keys, to prevent unauthorized persons from actuating the doorlock with a view to unlocking and opening the door.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out .in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a plan view of the improvement as applied to a door, the latter being shown in section. Fig. 2 is a sectional view of the same on the line 2 2 of Fig. 1. Fig. 3 is a transverse section of the same, showing the key `inserted and the bit in engagement with the retract-ing mechanism of the main bolt of the door-lock. Fig. 4 is a front `elevation of the improvement. Fig. 5 is a sectional front elevation of the same. Fig. 6 is an enlarged perspective view of one of the tumbler-pins. Fig. 7 is a perspective view of the frictionroltler for the tumbler-pins. Fig. 8 is a face view of the .rear end of the plug, and Fig. 9 is a face view of the bit-chamber turning with the plug.

In the escutcheon-case A, secured to a door B, is mounted to turn a plug C, having` the usualkeyhole D for the passage of a key E, employed for bringing spring-pressed tumbler-pins .F into proper position to allow of turning the plug C in the case A. The keyhole D opens at its rear end into a cylindrical chamber G, forming a part of the plug C to turn with the latter, and in this chamber 1s mounted to turn with the plug and to slide m l the direction of the axis of the plug C a bit or cam H, held normally in retracted position by a spring I and adapted to be pushed inwardly by' the terminal of the key E whenever the latter is inserted in the keyhole D and pushed inward to itsfull extent, it being understood that the keyE is made sufficiently long to )ush the bit or .cam H inwardly against t e tension of its spring I., as plainly indicated in Fig. 3. The bit or cam H when pushed inward Ivy the key E engages a recess 1n the retracting mechanism J' 0I the main bol-tof a door-lock J of any approved construction, so that the main bolt of the doorlock is retracted on turning the proper key E.

As shown in Figs. 1, 2, and 8, the bit II is rectangular in cross-section and extends through a correspondingly-shaped opening formed in the back of the chamber G, and the said bit is provided with a cylindrical head H', fitting the interior of the chamber G and adapted to be engaged b f the terminal of the key E. The rear end o the bit or cam H is mounted to slide in and turns with a bearing. H2, mounted to turn in a rear face-plate K, let into the inner face of the door B and removably connected with the case A b suitable screws K', as lainly indicated in Fig. 1.

The forward en of the chamber G is preferably provided with lugs G', (see Fig. 9,)

fitting into corresponding recesses C on the inner end of the plug C, so that when the latter is turned the chamber G turns with the plug. A bearing-plate G2, in which the forward end of the chamber G is mounted to turn, is fastened by screws (see Fi 2) to the rear end of the case A to allow o removing the bearing-plate Gzwhenever it is'desired to gain access to the chamber G, the bit H, and its spring I in case of repairs.

Each of the tumbler-pins F consists of a plug-pin F' and a driver F2, andthe pins are fitted in suitable pin-chambers formed in the case A and the plug C, the pins being preferably made rectangular in cross-section, and the driver F2 of the pin is provided in its upper portion with a slot F3, on the bottoni of which is seated a spring L, guided at its upper end on a pin N, havi'ng a head N' for the upper end of the spring to abut against, the said head of the guide-pin N resting against the under side of a cover A', removably held on the top of the case A (see Fig. 5) to permit of conveniently gaining access to the tumblerpin chambers in case repairs have to be made.

IOC

Y engage the said y By the arrangement described an exceedingly long spring L can be employed.

The plug-pin F is formed in its lower por-l tion with a keyhole-slot F4., leading at its upper end into an enlarged recess F5, containing a friction-roller F, adapted to en age the bit edge of the key E whenever the latter is inserted in the lock through the keyhole Dand the slot Ff. By having a friction-roller F6 arranged in each pin and transverse to the entering-key E it is evident that the key can be conveniently inserted in the lock Without undue friction, and the tumbler-pins are readily caused "Ito slide up in the pin-chambers by the forward pressure of the bits of the key exerted on the revolving friction-rollers Fv at the time the key is pushed into the keyhole.

From the foregoing it will be seen that in order to actuate the bolt of the door-lock it is absolutel necessary that the roper key is used, as t e bit H has to be pus ed inward to then turned to actuate the said retracting mechanism; but'the bit cannot be turned unv less the plug is iirsturilocked by the tumblerplug mountedto f plus pins being moved into proper position by the pro er key.

aving thus described `,my invention, I claim as new and desire Ato secure by Letters Patnt- 4 Q l. A tumbler-lock comprising a casing, a

:"n therein, sectional tumbler-pins slidable in the casing and plug, the plug-pin having a key-slot leading to a recess, and a friction-roller in the said recess.

2. A tumbler-lock provided with a turning plug having a chamber at the inner end there of, a casing in which the plug is mounted to turn, tumbler-pins, and a normally retracted slidable bit `-fartially received in said chamber, adapted to be turned with the plug on the insertion of a proper key in the lock, said bit being also adapted to be engaged by aportion of the key to project the same into engagement with the retracting mechanism for the main bolt.

3. A tumbler-lock comprising a casing, a mounted to turn therein, a spring pressed bit slidable lengthwise on the plug and turning with the same, and ,springpressed tumbler-pins in the casing and plug, adapted to beI engaged by the key the terminal of which engages the said-bit for imparting lengthwise movement tothe said bit to engage the latter with the retracting device for the main bolt.

4. A tumbler-lock provided with a tumbler-controlled plug'having at its inner end a chamber, and a normally retracted springactuated bit partially received in the chamber and turning with the plug and adapted to retracting mechanism and be engaged by the terminal of a key for the latter to impart a sliding motion to the bit.

5. A lock provided wlth'a plug adapted to be turned byga key, and a spring-pressed bit slidable lengthwise on the plug and adapted to be engaged-by the key-terminal and shot outward a ainst'th`E tension of its spring.

6,. A locl provided with a plug a apted to be turned by a key, a spring-pressed bit slidable lengthwise on the plug and adapted to be engaged by the key-terminal and shot outward against the tension of its slpring, andY key-controlled means for norma y locking the plug against turning. z

7. A lock' provided 'th a tumbler-pm comprising a plug-section and a driver, the

latter having a slot extending Jfrom its top seated in the bottom of the slot, and a gui e-pin for the spring, having a head for the spring to abut against.

8. A lock 'comprlsing a case, a plug mounted to turn therein, spring-pressed tumblerpins in the said plug and case, and arranged at right angles to the axis of the said plug, to be engaged by the edge of the key, a springpressed bit slidable on the plug and turning with the same, the terminal of the key being adapted to engage the bit to impart a sliding movement to the same anda bearing for the bit to slide in and to turn with.

downward, a sprin 9. A lock comprising a case, a plug mounted to turn therein, spring-pressed tumblerpins in the said plug and case, and arranged at right angles to the axis oi thev said plug, to be engaged by the edge of the key, a springpressed bit slidable on the lug and turning with the same, the termina of the key being adapted to engage the bit to impart a sliding movement to the same, a bearing for the bit to slide in and to turn with, and a rear faceplate in which the said bearing is-mounted to turn.

10. Alock comprising a case, a plug mounted to turn thereln, spring-pressed tumblerpins in the said plug and case, and arranged at right angles-to the axis ofthe said plug, t0. be engaged by the edge of the key, a springpressed bit slidable on-the plug and turning with the same, the terminal of the key being adapted to engage the bit .to impart al sliding movement to the same, a bearing for the bit to slide in and to turn with, and a lrear face.- plate removably connected with the saidcase and in wliich the said bearing is mounted to turn.

ln testimony whereof name to this specification in two subscribing witnesses.

NICHOLASA W. WEBB.

I have signed my the presencez of ICO IIO 

